Stop buying replacement chemicals and tablets. NatureZone offers a push button 3min auto-shut-off cycle, destroys germs and removes germ-created odors and tastes from many hygiene items as well as its primary use – Maintaining oral appliance integrity.Note – Previous NatureZones[model 100-DIS] do not have an AC cord port and cannot accept the AC cord for power. NatureZone model 200-DIS includes the AC Adapter port and the wall-plug-ready power cord.